Vehicle chock



May 25, 1948.

W. T. SCHWARZHOFF VEHICLE CHOCK Filed Aug. 14, 1946 2 Sheets-Sheet l Inventor QAM Ma'ny 25, 1948. w. TQ scHwARzHoFF VEHICLECHOCK Filed Aug. 14, 1946 2 Sheets-Sheet 2 I u veu to r Willzm Z' Schwarz/m ff Attoreys Patented May 25, 1948 UNITED STATES f PATENT oEFicE I 2,442,023

VEHICLE 01100K William T. Schwarzhoff, Waukon, Iowa Application August 14, 194s, serial No. 690,409

1 Claim. l

The present invention relates to new and useful improvements in vehicle ch'ocks and has for its primary object to provide an inexpensive, durable and easily operated device whereby the wheels of a vehicle will be held against movement while one of the wheelsis jacked up.

An important object of the present invention is to provide a pair of front and rear chocking blocks constructed of sheet metal and in which the parts are welded together.

A further object of the invention is to provide a single locking bar connecting the chocking blocks on the outer sides of the latter whereby to enable the easy adjustment of the blocks by the operator.

Another object of the invention is to provide a device of this character of simple and practical construction, which may be manufactured at relatively low cost and which otherwise is well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a side elevational View of the invention in use;

- Figure 2 is an enlarged top plan view of one of the chocking blocks;

Figure 3 is a front elevational view of one of the blocks with the locking bar shown in section;

Figure 4 is a sectional view taken on a line 4-4 of Figure 2;

Figure 5 is a fragmentary sectional view taken on a line 5-5 of Figure 3, and

Figure 6 is a fragmentary side elevational view of the adjusting bar and the locking guide therefor.

Referring now to the drawing in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention the device consists essentially of two sheet metal blocks 5 and 6 adapted for positioning respectively at the front and rear of a vehicle tire 9 and having opposed curved surfaces l and 8 to conform to the curvature of the tire. The blocks are adjustably connected to each other by an iron locking bar IIJ having notches or teeth II formed in the lower edge thereof.

The locking bar I0 is seated in four channel shaped guides I2, I3, I4 and I5 having flanges I6 turned outwardly for attaching to the outer sides of the blocks 5 and 6 b'y rivets or pins I1. The rear end I8 of the locking bar I0 is pivoted into channel I5 by a rivet or pin I9 that extends through the channel and through the locking bar. Thelocking bar IIJ` is movable vertical-1y in the other channel guides I2, I3 and [4.

The blocks 5 and 6 are adjustable relative to each other to accommodate any diameter vehicle tire 9 by merely raising the front endZIl of the locking bar until the proper space between the blocks 5 and 6 is obtained and then lowering the locking bar until the notches or teeth II engage the forwardmost channel I2 as is shown in Figure 6.

The wheel/block 5 is made of three pieces of sheet metal 2|, 22 and 23, the member 2| comprising a center section having a flange 24 turned outwardly at one end to rest on the ground, the center section then extending upwardly at a slight angle as shown at 2I`a to its uppermost point 25 Where it is then curved downwardly as shown at 'I to conform to a vehicle tire 9, the curved portion of the center section terminating at its lower edge in a ange 26 which also rests on the ground.

The members 22 and 23 comprise side sections for the block having anges '2l and 28 turned outwardly and having vertically inclined edges 29 and 30 corresponding to the slope 2Ia of the center piece.

Each side section also includes an upper horizontal edge 33 and a vertical edge 34. An inclined edge 35 joins the horizontal and vertical edges 33 and 34, inclined edge 35 being bent inwardly and downwardly and is so curved at its lower edge as to conform to the curvature of the center section v2| and is welded at 36 to the surface of the center section while the edges of the curved surface of the block are Welded to the side sections as `shown at 36a.

The block 6 is constructed in a similar manner to the construction of the block 5 but with the curved portion 8 of the center section placed in opposed relation with the curved portion 'I of the block 5.

The channel guide I2 a-t the free end of the locking bar I0 is slightly inclined on block 6 to provide a sloping edge 3l to insure a locking engagement by the teeth Il of the locking bar,

The side walls 22 and 23 are formed with downwardly and inwardly bent extensions -to provide inwardly sloping inner walls 22a and 23a respectively which frictionally engage the sides of 4the tire 9.

In operation, the metallic blocks 5 and 6 are placed in front of and behind a vehicle wheel as shown in Figure Vl with the curved surfaces 1 and 8 bearing against the Ytire and the locking bar v il) lowered to engage the teeth |I with the sloping edge 31 of the channel guide I2. The'device is detached by raising the free end .of the locking bar to disengage the teeth Il Vfrom the guide I2,

thereby permitting kthe block 6 `to slide on the bar away from the tire. Y

The block 6 may be completely removed from the lockingfbar toi faci-iitate carrying and storingvv thereof.'

of said side sheets, and an inwardly sloping inner Y sheet to frictionally grip the sides of a vehicle'V In View of the foregoing description taken in ,Y

deemed unnecessary. 1 A

It is to be understood, however",` 'that even Vthough there is herein shown and describeda pre# ferred embodiment of the inventionthe same is conjunction With the accompanying drawings itl@ fai is believed thatsJ clear understanding of thedef` vice will be quite apparent to those skilledi'nth'isV ,157. art. A more detailed description'v isV accordingly-1 c susceptible to certain changes fully ,eompre-Y hended by the spirit ofthe intention asA herein described and the scope ofthe appended claim.V

rclaim: it n A wheel chock comprising a center sheetrof metal of substantiallyinvertedlV-form and in Number,

- Number a wall extending downwardly from .therupper edge f of said side walls and also welded to said center tire.positioned/'againstthecurved suraee of the block. t W i WILLIAM T. SCHWARZHOFF.

REFERENCES CITED UNTED STATES PA'riiiirisV Name Date 472,997 1,076,152

FOREIGN PATENTS' Country Y toY Y YThe following referencesare of record in the fileo'f this patent: Y 

